Abstract: A cabinet and associated method are provided for storage of electrical components. In one embodiment, the cabinet includes a chamber including a number of side walls and a top cap and a canted ceiling formed by the top cap. A first overhang portion is defined by a wide end of the top cap and a second overhang portion is defined by a narrow end of the top cap. A number of first air flow openings are located in the first overhang portion and a number of second air flow openings are located in the second overhang portion. The elevation of at least one of the first air flow openings is at least as great as an elevation of the second air flow openings.

Abstract: A uninterruptible power system in which separate inverters are connected to separate d.c. power sources established by independent power supplies, a.c., d.c. or both, and have their a.c. outputs connected to separate transformer primary windings with the primary to secondary turns ratios of the primary windings establishing different effective secondary voltages for determining the power source for normally supplying the power from the system and the sequence in which the other power sources are used on power failure, the magnitudes of the effective voltages determining the power source for initially supplying the power with any other power source supplying the power when its effective voltage is higher than any other available power source.

Abstract: High incision velocity vibrating scalpel structure and method comprising motor means including a motor having a drive shaft rotatable on energizing the motor, an eccentric fly wheel secured to the drive shaft for rotation therewith and scalpel blade support structure rigidly secured to the motor, all resiliently mounted in a elongated hollow body member, to which motor means a scalpel blade may be secured and vibrated on energizing of the motor means to rotate the fly wheel and alternating or direct current means for selectively energizing the motor. A resilient pivot may also be provided for the motor means and a resilient boot is provided over one end of the body member between the body member and motor means for sealing the one end of the body member. In use, on energizing the motor means, the motor means, scalpel blade support structure and scalpel blade are caused to vibrate at a high velocity to incise tissue with the scalpel blade.